Figure 3From: Modification of light absorption in thin CuInS2 films by sprayed Au nanoparticlesSEM images of Au nanoparticles on glass. Au nanoparticles were obtained by spray of 2 mM HAuCl4 aqueous solution onto a substrate at 340°C using solution amounts of (a) 2.5 ml, (b) 5 ml, and (c) 15 ml.Back to article page